org.bouncycastle.asn1.DateUtil Maven / Gradle / Ivy
package org.bouncycastle.asn1;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
class DateUtil
{
private static Long ZERO = longValueOf(0);
private static final Map localeCache = new HashMap();
static Locale EN_Locale = forEN();
private static Locale forEN()
{
if ("en".equalsIgnoreCase(Locale.getDefault().getLanguage()))
{
return Locale.getDefault();
}
Locale[] locales = Locale.getAvailableLocales();
for (int i = 0; i != locales.length; i++)
{
if ("en".equalsIgnoreCase(locales[i].getLanguage()))
{
return locales[i];
}
}
return Locale.getDefault();
}
static Date epochAdjust(Date date)
throws ParseException
{
Locale locale = Locale.getDefault();
if (locale == null)
{
return date;
}
synchronized (localeCache)
{
Long adj = (Long)localeCache.get(locale);
if (adj == null)
{
SimpleDateFormat dateF = new SimpleDateFormat("yyyyMMddHHmmssz");
long v = dateF.parse("19700101000000GMT+00:00").getTime();
if (v == 0)
{
adj = ZERO;
}
else
{
adj = longValueOf(v);
}
localeCache.put(locale, adj);
}
if (adj != ZERO)
{
return new Date(date.getTime() - adj.longValue());
}
return date;
}
}
private static Long longValueOf(long v)
{
return Long.valueOf(v);
}
}